difficult / hard, probably impossible

clear

beat, clear (a game, or round in a game) / clear (data)

(hobbyist) Ellipsis of クリアー塗装.

"Clear file folder", a simple plastic sleeve (perhaps only somewhat opaque when a design is printed on it, as is common in promotional events) for holding documents, open on two consecutive sides and closed on two consecutive sides.

indicates respect

(informal, chiefly men's speech) second-person personal pronoun: you (romantic)

an emperor / a lord / a master / a nobleman or other person of high(er) rank / (after a が (ga) or の (no) particle) term of respect to another person / (historical, archaic) a prostitute

king, lord, ruler / person of high rank / form of address to fellow colleagues or inferiors

suffix for boys' names / indicates respect / indicates familiarity